182 BULLETIN 2 00, UNITED STATES NATIONAL MUSEUM 



HELOBIUM Gistel, 1834, p. 9. [Not Leach, 1815. Synonym of Acidota.l 

 Genotype : JleloMum crenatum (Fabricius) {Staphylinus). 

 Fixed iy : Gistel, 1834, p. 9, by monotypy. 

 Synonyms-. {See Acidota). 

 HEMATODES [Br r or for Haematodes-i. 



HEMIMEDON Casey, 1905, p. 160. [Synonym of Hypomedon.] 

 Genotype: Hemimedon angustum Casey. 

 Fixed hy : Lucas, 1920, p. 321, by subsequent designation. 

 Later citations : H. ruflpes Casey, by Blackwelder, 1939, p. 118 ; 1943, p. 260. 

 Synonyms: (See Hypomedon). 

 Variant spellings : 



Hemmiedon Wu, 1937, p. 331. 

 Notes : The present disposition of this name is based on the study by Black- 

 welder (1939). 

 HEMIPOLEMON Wasmann, 1916a, p. 144. [Subgenus of Micropolemon.'] 

 Genotype: Ilemipolemon planicollis (Wasmann) (Micropolemon). 

 Fixed l}y : Wasmann, 1916a, p. 145, by original designation and monotypy. 

 Later citations : H. planicollis Wasmann, by Wasmann, 1917, p. 317. 

 Synonymic homonyms : 



Hemipolemon Wasmann, 1917, p. 319. 

 Synonyms: (See Mic7'02)olenion) . 

 HEMIQUEDIUS Casey, 1915, p. 399. [Subgenus of Quedius.-] 

 Genotype: Eemiquedius ferox (LeConte) (Quedius). 

 Fixed hy : Casey, 1915, p. 399, by original designation and monotypy. 

 Synonyms: (See Quedius). 

 HEMISTENUS Motschulsky, 1860c, p. 557, without species. [Subgenus of 

 Stenus.} 

 Genotype: Hemistenus gilmpes (Motschulsky) (Stenus). 

 Fixed by : Blackwelder, here, by subsequent designation. 

 Other citations: E. palUtarsis (Stephens), by Tottenham, 1939b, p. 229; by 



Blackwelder, 1943, p. 208 ; by Tottenham, 1949b, p. 335. 

 Discussion : This subgenus was established by Motschulsky in 1860 without 

 included species. The lirst species included appear to be the twelve listed 

 by Motschulsky in 1868. These were all species described by him in 1857 

 in Stenus. The designation of palUtarsis by Tottenham (quoted by Black- 

 welder) cannot be accepted unless that species was referred to Hemistenus 

 before 1808. Lucas, 1920, p. 322, failed to designate a single species as type. 

 Synonyms: (See also Sfetms) 



Mesostenus Rey, 1884a, p. 326, [Subjective-objective. Not Graven- 



horst, 1829.] 

 Parastenus Heyden, 1905, p. 282. [New name for Mesostenus Key.] 

 HEMITHECTA Casey, 1911, p. 211. [Synonym of Thecturota.-] 

 Genotype: Hemithecta rufieollis (Casey) (Thecturota) . 

 Fixed hy : Casey, 1911, p. 211, by original designation and monotypy. 

 Later citations : H. rufieollis Casey, by Fenyes, 1918, p. 23 ; by Lucas, 1920, 



p. 322. 

 Synonyms: (See Thecturota). 

 HEMITROPLi Mulsant and Rey, 1874d, p. 211. [Synonym of Coprothassa.^ 

 Genotype: Hemitropia melanaria (Mannerheim) (Oxypoda). 

 Fixed hy : Mulsant and Rey, 1874d, p. 211, by monotypy. 

 Later citations : H. sordida (Marsham), by Fenyes, 1918, p. 23, not originally 

 included. H. melanaria (Mannerheim), by Tottenham, 1949b, p. 394, 



